Properties of the Number 18003

Eighteen Thousand Three

Basics

Value: 18002 → 18003 → 18004

Parity: odd

Prime: No

Previous Prime: 17989

Next Prime: 18013

Digit Sum: 12

Digital Root: 3

Palindrome: No

Factorization: 3 × 17 × 353

Divisors: 1, 3, 17, 51, 353, 1059, 6001, 18003

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 100011001010011

Octal: 43123

Duodecimal: A503

Hexadecimal: 4653

Square: 324108009

Square Root: 134.1752585240662

Classification

Fibonacci: No

Bell Number: No

Factorial Number: No

Regular Number: No

Perfect Number: No

Special

Kaprekar Constant: No

Munchausen Constant: No

Armstrong Number: No

Kaprekar Number: No

Catalan Number: No

Vampire Number: No

Taxicab Number: No

Super Prime: No

Friedman Number: No

Fermat Number: No

Cullen Number: No

OEIS Sequences

Positions of zeros in A165597. A165598

a(n) = 20·n² + 3. A167573

Number of (w,x,y) with all terms in {0,...,n} and w<x+y and x<=y. A212982

Decimal representation of the middle column of the "Rule 75" elementary cellular automaton starting with a single ON (black) cell. A266897

Number of permutations of [n] avoiding {1324, 2413, 3421}. A294803

Square array A(n,k), n >= 0, k >= 0, read by antidiagonals downwards, where column k is the expansion of e.g.f. B(x)^k, where B(x) is the e.g.f. of A385060. A385063

Sum of digits in n-th term of A006711. A22480

Numbers n such that σ(φ(n)) = sum of anti-divisors of n. A74835

Number of n X n binary arrays with rows and columns, considered as graycode numbers, in strictly increasing order. A162118

Number of n X n binary arrays with rows and columns, considered as graycode numbers, in strictly increasing order, and no more than 5 ones in any row or column. A162122